The first citrus feed mills built in Florida used Louisville or Davenport presses. The Louisville press was a horizontal roller press. The Davenport press used two flat perforated cones. These presses had several problems in common, the edges of the peel mass did not get pressed much and the pressure was released before discharging the press cake, giving reabsorption of the press liquor. Most of the installations changed to vertical or horizontal screw press by 1960. Since then, there has been only modest improvements.
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